Plate thickness measuring device and measuring method

Abstract

The invention provides a plate thickness measuring device and method, and the device comprises a rack which is used for placing and fixing a plate; each measuring element group comprises a first measuring element and a second measuring element which are oppositely arranged, the first measuring element and the second measuring element are both fixed on the rack, and the first measuring element and the second measuring element are symmetrically arranged; a first measuring head and a second measuring head are respectively arranged at one ends, close to the plate, of the first measuring element and the second measuring element, and the first measuring head and the second measuring head are used for acquiring the thickness of the plate; and the control unit is electrically connected with the measuring element group and is used for controlling the first measuring head and the second measuring head to stretch out and reset. According to the invention, the thickness of the plate can be measured quickly and accurately, the working efficiency is improved, subsequent processing such as injection molding or spraying on the plate is facilitated, and the product yield is improved.

Description

[Technical Field]

[0001] This invention relates to the field of plate thickness measurement technology, and in particular to a plate thickness measuring device and method. [Background Technology]

[0002] Compared to traditional alloy and plastic materials, carbon fiber reinforced composite materials offer advantages such as lightweight, high strength, and high rigidity as structural materials, making carbon fiber sheets widely used in 3C electronic products. Before being applied to products, carbon fiber sheets typically undergo processing such as plastic coating or spraying. However, the thickness of some incoming carbon fiber sheets varies, necessitating initial thickness measurement. This thickness is then used in subsequent processing to differentiate the incoming materials and select appropriate molds or spraying processes. Currently, thickness measurement of carbon fiber sheets and other sheet materials is generally performed using micrometers or laser displacement sensors. However, manual measurement with micrometers is inefficient, while laser displacement sensors require high surface reflectivity; poor surface reflectivity significantly impacts measurement results and reduces accuracy.

[0003] In view of this, the present invention provides a plate thickness measuring device and a measuring method to solve the above problems. [Summary of the Invention]

[0004] The technical problem this invention aims to solve is the low efficiency and inability to ensure measurement accuracy of existing methods for measuring the thickness of sheet metal. This invention provides a sheet metal thickness measuring device and method to address these problems.

[0005] The solution to the technical problem of this invention is: a plate thickness measuring device, comprising:

[0006] A frame for holding and fixing sheet metal;

[0007] At least one measuring element group, each measuring element group including a first measuring element and a second measuring element arranged opposite to each other, the first measuring element and the second measuring element are both fixed on the frame, and the first measuring element and the second measuring element are symmetrically arranged, the first measuring element and the second measuring element respectively have a first probe and a second probe at the end near the plate, the first probe and the second probe are used to obtain the plate thickness;

[0008] The control unit is electrically connected to the measuring element group and is used to control the extension and reset of the first probe and the second probe.

[0009] Preferably, the frame is provided with an upper fixing plate, a positioning plate, and a lower fixing plate. The positioning plate is located between the upper fixing plate and the lower fixing plate and is used to position the material to be tested. The positioning plate is provided with a plurality of measuring holes, which are set corresponding to the position where the thickness of the material is to be measured. The first measuring element is fixed to the upper fixing plate, and the second measuring element is fixed to the lower fixing plate. The first measuring element and the second measuring element are symmetrically arranged on both sides of the measuring holes.

[0010] Preferably, the upper fixing plate is provided with a sensor for sensing whether the plate to be tested is placed on the positioning plate.

[0011] Preferably, the plate thickness measuring device further includes a comparison unit and a display unit. The comparison unit and the display unit are electrically connected to the control unit and the measuring element group. The comparison unit is used to receive the plate thickness data measured by the measuring element group and compare it with the plate thickness tolerance range preset in the comparison unit. The display unit is used to display the comparison result.

[0012] A method for measuring plate thickness using a plate thickness measuring device includes the following steps:

[0013] (1) Place and fix the plate to be tested on the positioning plate;

[0014] (2) Start the control unit, which controls the measuring element group to measure the thickness of the plate;

[0015] (3) The comparison unit acquires the plate thickness data measured by the measuring element group and calculates the average plate thickness;

[0016] (4) The comparison unit compares the calculated average thickness of the board with the preset thickness tolerance range of the board in the comparison unit to obtain the comparison result;

[0017] (5) The display unit displays the comparison results;

[0018] (6) Select the corresponding mold core to process the sheet metal according to the comparison results.

[0019] Preferably, the comparison unit has at least one preset sheet thickness tolerance range, and the tolerance of each sheet thickness tolerance range is 0.03mm. The sheet with the largest sheet thickness tolerance range is selected for processing with the mold with the smallest mold core cavity thickness specification to reduce the product segment difference after molding.

[0020] The beneficial effects of this invention are that the plate thickness measuring device of this invention tests the plate thickness by contacting the plate, which is fast. Multi-point measurement can improve the accuracy of the test, which is convenient for subsequent processing such as injection molding or spraying of the plate and improves the product yield. [Attached Image Description]

[0021] Figure 1 This is a schematic diagram of the structure of a plate thickness measuring device according to the present invention.

[0022] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0023] Figure 3 This is a flowchart illustrating the steps of a measurement method using a plate thickness measuring device.

Detailed Implementation Methods

[0024] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the embodiments of the present invention and their accompanying drawings.

[0025] This invention provides a plate thickness measuring device, comprising:

[0026] Frame 1, the frame 1 being used to place and fix the plate;

[0027] At least one measuring element group, each measuring element group including a first measuring element 20 and a second measuring element 21 arranged opposite to each other, the first measuring element 20 and the second measuring element 21 are both fixed on the frame 1, and the first measuring element 20 and the second measuring element 21 are symmetrically arranged. The first measuring element 20 and the second measuring element 21 have a first probe 200 and a second probe 210 respectively at the end near the plate. The first probe 200 and the second probe 210 are used to obtain the thickness of the plate. The first measuring element 20 and the second measuring element 21 are both contact digital displacement sensors.

[0028] The control unit is electrically connected to the measuring element group and is used to control the extension and reset of the first probe 200 and the second probe 210.

[0029] The frame 1 is provided with an upper fixing plate 10, a positioning plate 11, and a lower fixing plate 12. The positioning plate 11 is located between the upper fixing plate 10 and the lower fixing plate 12 and is used to position the material to be tested. The positioning plate 11 is provided with a plurality of measuring holes 110, which are set corresponding to the position where the thickness of the material is to be measured. The first measuring element 20 is fixed to the upper fixing plate 10, and the second measuring element 21 is fixed to the lower fixing plate 12. The first measuring element 20 and the second measuring element 21 are symmetrically arranged on both sides of the measuring holes 110.

[0030] The upper fixing plate 10 is equipped with a sensor 3, which is used to sense whether the material to be tested is placed on the positioning plate 11.

[0031] The plate thickness measuring device further includes a comparison unit and a display unit. The comparison unit and the display unit are electrically connected to the control unit and the measuring element group. The comparison unit is used to receive the plate thickness data measured by the measuring element group and compare it with the plate thickness tolerance range preset in the comparison unit. The display unit is used to display the comparison result.

[0032] A method for measuring plate thickness using a plate thickness measuring device includes the following steps:

[0033] S1: Place and fix the plate to be tested on the positioning plate 11;

[0034] S2: Start the control unit, which controls the measuring element group to measure the thickness of the plate;

[0035] S3: The comparison unit acquires the plate thickness data measured by the measuring element group and calculates the average plate thickness;

[0036] S4: The comparison unit compares the calculated average thickness of the board with the preset thickness tolerance range of the board in the comparison unit to obtain the comparison result;

[0037] S5: The display unit displays the comparison result;

[0038] S6: Select the corresponding mold core to process the sheet metal based on the comparison results.

[0039] The comparison unit has at least one preset sheet thickness tolerance range, and the tolerance of each sheet thickness tolerance range is 0.03mm. The sheet with the largest sheet thickness tolerance range is selected for processing with the mold with the smallest mold core cavity thickness specification to reduce the product segment difference after molding.

[0040] The beneficial effects of this invention are that by using a set of measuring elements to contact the sheet material for thickness measurement, the sheet material thickness can be measured quickly, improving work efficiency. By measuring the thickness at multiple points on the sheet material, the accuracy of the test results can be improved, facilitating subsequent processing such as injection molding or spraying, and increasing product yield.

[0041] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for measuring the thickness of a sheet material, characterized in that The application relates to a plate thickness measuring device. The device comprises a rack for placing a fixed plate, at least one measuring element group, each of which comprises a first measuring element and a second measuring element arranged oppositely, the first measuring element and the second measuring element are fixed on the rack, and the first measuring element and the second measuring element are symmetrically arranged, the first measuring element and the second measuring element are respectively provided with a first probe and a second probe near one end of the plate, and the first probe and the second probe are used for acquiring the thickness of the plate; and a control unit which is electrically connected with the measuring element group and is used for controlling the first probe and the second probe to extend and reset. The rack is provided with an upper fixed plate, a positioning plate and a lower fixed plate, the positioning plate is arranged between the upper fixed plate and the lower fixed plate and is used for positioning the plate to be measured, a plurality of measuring holes are arranged on the positioning plate and correspond to the positions to be measured of the thickness of the plate, the first measuring element is fixed on the upper fixed plate, the second measuring element is fixed on the lower fixed plate, and the first measuring element and the second measuring element are symmetrically arranged on the two sides of the measuring hole. An inductor is arranged on the upper fixed plate and is used for sensing whether the plate to be measured is placed on the positioning plate.

2. A device for measuring the thickness of a sheet material as claimed in claim 1, wherein: The plate thickness measuring device further comprises a comparison unit and a display unit, the comparison unit and the display unit are electrically connected with the control unit and the measuring element group, the comparison unit is used for receiving the plate thickness data measured by the measuring element group and comparing the plate thickness data with a preset plate thickness tolerance range in the comparison unit, and the display unit is used for displaying the comparison result.

3. A board thickness measuring device as claimed in claim 2, characterized in that: The device comprises the following steps:

4. A board thickness measuring device as claimed in claim 1, characterized in that: (1) placing the plate to be measured on the positioning plate; 5. A measuring method using the plate thickness measuring device according to any one of claims 1 to 4, characterized by, (2) starting the control unit, and the control unit controls the measuring element group to measure the thickness of the plate; (3) the comparison unit acquires the plate thickness data measured by the measuring element group and calculates the average thickness of the plate; (4) the comparison unit compares the calculated average thickness of the plate with the preset plate thickness tolerance range in the comparison unit to obtain a comparison result; (5) the display unit displays the comparison result; (6) selecting a corresponding mold core according to the comparison result to process the plate. At least one plate thickness tolerance range is preset in the comparison unit, the tolerance of each plate thickness tolerance range is 0.03 mm, and the plate thickness comparison is used for selecting a mold with the smallest mold core thickness specification corresponding to the plate with the maximum plate thickness tolerance range to process, so that the product segment difference after forming is reduced. ​ 6. The method of measuring the thickness of a sheet material as claimed in claim 5, wherein: ​

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